CN105429330A - Motor rotor and motor comprising same - Google Patents
Motor rotor and motor comprising same Download PDFInfo
- Publication number
- CN105429330A CN105429330A CN201510967657.XA CN201510967657A CN105429330A CN 105429330 A CN105429330 A CN 105429330A CN 201510967657 A CN201510967657 A CN 201510967657A CN 105429330 A CN105429330 A CN 105429330A
- Authority
- CN
- China
- Prior art keywords
- magnet steel
- rotor
- motor
- groove
- groove group
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 85
- 239000010959 steel Substances 0.000 claims abstract description 85
- 230000005389 magnetism Effects 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000004907 flux Effects 0.000 abstract description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 4
- 150000002910 rare earth metals Chemical class 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009795 derivation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention discloses a motor rotor and a motor comprising the motor rotor, wherein the motor rotor comprises a rotor iron core (11) with magnetic steel slots and magnetic steel (12) inserted in the magnetic steel slots, the number of the magnetic steel slots corresponding to each magnetic pole is n, and n is more than or equal to 2; the n magnetic steel grooves corresponding to each magnetic pole form a groove group, and the n magnetic steel grooves of each groove group are distributed along the radial direction; the magnetic steels (12) inserted into the slot groups are m in number, and m is less than or equal to n. By the arrangement, the motor rotor provided by the invention can effectively improve the space utilization rate of the rotor core, and can strengthen the magnetic flux and improve the motor performance on the basis of low cost.
Description
Technical field
The present invention relates to technical field of motors, more particularly, relate to a kind of rotor and comprise the motor of this rotor.
Background technology
The motor of frequency-changeable compressor comprises rotor and motor stator, and wherein, rotor is connected with the bent axle of compressor, to drive crank rotation.
Please refer to Fig. 1, Fig. 1 is the rotor schematic diagram of frequency-changeable compressor of the prior art.The rotor of frequency-changeable compressor comprises rotor core 1, and rotor core 1 is provided with and magnetic pole magnet steel groove one to one, being inserted in magnet steel groove of multiple magnet steel 2 correspondence.
Magnet steel of the prior art is all the magnet steel adopting the trade mark of the same race substantially, and the magnet steel of the trade mark of the same race adopts rare earth material of the same race to make, and has the performances such as identical remanent magnetism, coercive force.This structure, rotor core space availability ratio is low, and magnet steel consumption is fixed, and cannot strengthen magnetic flux, cause motor performance low, and under magnetic flux needs to add folded high situation not, cost increase is very many, and cost performance is on duty mutually in identical folded high situation.
Therefore, the space availability ratio how solving prior art rotor iron core 1 is low, and magnet steel consumption is fixed, magnetic flux cannot be strengthened in identical folded high situation, cause motor performance low, cost be high, the problem of sexual valence ratio, become those skilled in the art's important technological problems to be solved.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of rotor, it effectively can improve the space availability ratio of rotor core, and can on the basis of low cost, strengthen magnetic flux improve motor performance.Present invention also offers a kind of motor comprising above-mentioned rotor.
A kind of rotor provided by the invention, comprises the rotor core with magnet steel groove and the magnet steel be plugged in described magnet steel groove, and the quantity of the magnet steel groove corresponding with each magnetic pole is n, n >=2; The n answered with each pole pair described magnet steel groove forms a groove group, and n described magnet steel groove of each groove group radially distributes; The kind being plugged in the magnet steel in groove group described in each is m kind, m≤n.
Preferably, in each groove group the remanent magnetism of the different types of described magnet steel of plug-in mounting and coercivity parameters different.
Preferably, along the center of described rotor core to peripheral direction, the length of each magnet steel groove cross section of each described groove group and tapering width.
Preferably, the described magnet steel of plug-in mounting in two described magnet steel grooves of arbitrary neighborhood, the coercive force of magnet steel described in one of them is more than or equal to coercitive 1.5 times of magnet steel described in another.
Preferably, in groove group described in each plug-in mounting described magnet steel in, the coercive force of described magnet steel near the periphery of described rotor core is greater than the coercive force of the described magnet steel of the central part near described rotor core.
Preferably, described rotor core is stamped to form by diel.
Preferably, each groove group is by 3 described magnet steel groove compositions.
Present invention also offers a kind of motor, comprise rotor, described rotor is rotor as above.
Preferably, described motor is inverter compressor motor.
A kind of rotor provided by the invention, comprises the rotor core with magnet steel groove and the magnet steel be plugged in described magnet steel groove, and the quantity of the magnet steel groove corresponding with each magnetic pole is n, n >=2; The n answered with each pole pair described magnet steel groove forms a groove group, and n described magnet steel groove of each groove group radially distributes; The magnet steel kind be plugged in groove group described in each is m kind, m≤n.It should be noted that, the magnetic pole of rotor specifically can set according to actual conditions, such as, can be specially 4, and 4 magnetic poles are relative between two, certainly, also can be other quantity, such as, and two, six, eight etc.In technical scheme provided by the invention, each pole pair answers a groove group, and each groove group comprises radially-arranged n the magnet steel groove along rotor core, wherein, and n >=2.Each groove group can be fitted with m kind magnet steel according to actual conditions, wherein, and m≤n.Setting like this, rotor provided by the invention, each magnetic pole can adopt at most the magnet steel of the different trade mark of n kind, greatly make use of the space of rotor core, increases motor magnetic flux amount, lifting motor performance.As required, the trade mark of each rare earth magnetic steel and the size of magnet steel can be regulated, thus just can regulate counter electromotive force of motor and air gap flux density and cogging torque etc. on the basis of low cost.
Present invention also offers a kind of motor comprising above-mentioned rotor.Setting like this, motor provided by the invention, the space availability ratio of rotor core is higher, and can on the basis of low cost, strengthen magnetic flux improve motor performance.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the rotor schematic diagram of frequency-changeable compressor of the prior art;
Fig. 2 is the rotor schematic diagram of frequency-changeable compressor in the specific embodiment of the invention;
In Fig. 2:
Rotor core--11, magnet steel--12.
Embodiment
This embodiment provides a kind of rotor, and it effectively can improve the space availability ratio of rotor core, and can on the basis of low cost, strengthen magnetic flux improve motor performance.This embodiment additionally provides a kind of motor comprising above-mentioned rotor.
Below, with reference to accompanying drawing, embodiment is described.In addition, the embodiment shown in below does not play any restriction effect to the summary of the invention described in claim.In addition, the solution that the full content of the formation below represented by embodiment is not limited to as the invention described in claim is necessary.
Refer to Fig. 2, the rotor that this embodiment provides, comprise rotor core 11 and magnet steel 12, wherein, rotor core 11 is provided with multiple groove group, each groove group is corresponding with a magnetic pole of rotor core 11.Such as, when the magnetic pole of rotor is two pairs, rotor core 11 needs arrange four groove groups, and relative between two, each groove group is all corresponding with a magnetic pole.
It should be noted that, in this embodiment, each groove group comprises n magnet steel groove, and is fitted with the magnet steel 12 of the different trade mark of m kind in this n magnet steel groove, wherein, and n >=2, m≤n; And n magnet steel groove of each groove group radially distributes, such magnet steel groove adds up to rotor magnetic pole number (P) * often extremely corresponding magnet steel groove quantity (n).
Setting like this, the rotor that this embodiment provides, each magnetic pole can adopt at most the magnet steel 12 of the different trade mark of n kind, greatly make use of the space of rotor core 11, increases motor magnetic flux amount, lifting motor performance.As required, the trade mark of each rare earth magnetic steel 12 and the size of magnet steel 12 can be regulated, thus just can regulate counter electromotive force of motor and air gap flux density and cogging torque etc. on the basis of low cost.
In addition, in this embodiment, rotor core 11 can be made in a state of excitement by height and form, according to design of electrical motor requirement, during punching rotor core 11, rotor often extremely directly goes out n magnet steel groove, as far as possible near the outer circumferential side of rotor core 11 when size allows, to reduce magnetic force Shu Changdu as far as possible, reduce magnetic force loss, increase motor magnetic flux amount, improve motor performance.
In this embodiment, can according to design of electrical motor demand, the parameter such as remanent magnetism, coercive force of the m kind magnet steel 12 placed in n magnet steel groove can be different, also can, according to actual conditions, make the parameter such as remanent magnetism, coercive force of wherein two or more magnet steel 12 identical.
As preferably, the magnet steel groove of each group groove group is uniformly distributed along the radial direction of rotor core 11, and radially, the size of magnet steel groove can reduce gradually, certainly, also specifically can arrange according to the designing requirement of motor.
In the present embodiment, every magnet steel groove that extremely corresponding can be provided with three different sizes in rotor core 11, the magnet steel 12 of three kinds of rare earth materials of different size, the different trade mark is placed in three magnet steel grooves, the electrical quantity regulating and controlling motor can be carried out to a certain extent, make motor can have different ac-dc axis inductance, back EMF coefficient according to demand, go for various requirement motor.Meanwhile, according to demand, the coercive force of the magnet steel 12 in three magnet steel grooves can be designed to larger gap, as under same pole-face, wherein a slice or multi-disc magnet steel 12 coercive force are a, and under this pole-face, other a slice or other multi-disc magnet steel 12 coercive force are b, wherein, a >=1.5b.So can by automatically controlled debugging, require magnetize to the magnet steel 12 of low-coercivity or demagnetize according to machine operation, make machine operation on different working points, the operating power of motor can freely can be regulated and controled in certain limit, make motor adaptive faculty stronger, versatility is stronger, and motor can be made all to be operated on working point under different loads, makes most effective.
This embodiment additionally provides a kind of motor, comprises rotor, and this rotor is the rotor as above described in embodiment.This motor can be inverter compressor motor, certainly, also can be the motor of other type, no longer enumerates herein.Setting like this, the motor that this embodiment provides, the space availability ratio of rotor core 11 is higher, and can on the basis of low cost, strengthen magnetic flux improve motor performance.The derivation of the beneficial effect that the derivation of this beneficial effect and above-mentioned rotor bring is substantially similar, therefore repeats no more herein.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. a rotor, comprises the rotor core (11) with magnet steel groove and the magnet steel (12) be plugged in described magnet steel groove, it is characterized in that, the quantity of the magnet steel groove corresponding with each magnetic pole is n, n >=2; The n answered with each pole pair described magnet steel groove forms a groove group, and n described magnet steel groove of each groove group radially distributes; The kind being plugged in the magnet steel (12) in groove group described in each is m kind, m≤n.
2. rotor as claimed in claim 1, is characterized in that, in each groove group the remanent magnetism of the different types of described magnet steel (12) of plug-in mounting and coercivity parameters different.
3. rotor as claimed in claim 1, is characterized in that, along the center of described rotor core (11) to peripheral direction, and the length of each magnet steel groove cross section of each described groove group and tapering width.
4. rotor as claimed in claim 1, it is characterized in that, the described magnet steel (12) of plug-in mounting in two described magnet steel grooves of arbitrary neighborhood, the coercive force of magnet steel described in one of them (12) is more than or equal to coercitive 1.5 times of magnet steel described in another (12).
5. the rotor as described in any one of claim 1-4, it is characterized in that, in groove group described in each plug-in mounting described magnet steel (12) in, the coercive force of described magnet steel (12) near the periphery of described rotor core (11) is greater than the coercive force of the described magnet steel (12) of the central part near described rotor core (11).
6. rotor as claimed in claim 5, it is characterized in that, described rotor core (11) is stamped to form by diel.
7. rotor as claimed in claim 1, is characterized in that, each groove group is by 3 described magnet steel groove compositions.
8. a motor, comprises rotor, it is characterized in that, described rotor is the rotor as described in any one of claim 1-7.
9. motor as claimed in claim 8, it is characterized in that, described motor is inverter compressor motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510967657.XA CN105429330A (en) | 2015-12-18 | 2015-12-18 | Motor rotor and motor comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510967657.XA CN105429330A (en) | 2015-12-18 | 2015-12-18 | Motor rotor and motor comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105429330A true CN105429330A (en) | 2016-03-23 |
Family
ID=55507336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510967657.XA Pending CN105429330A (en) | 2015-12-18 | 2015-12-18 | Motor rotor and motor comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105429330A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014072924A (en) * | 2012-09-27 | 2014-04-21 | Aisin Seiki Co Ltd | Permanent magnet embedded motor |
| US20140346911A1 (en) * | 2011-12-26 | 2014-11-27 | Mitsubishi Electric Corporation | Rotor |
| CN205212585U (en) * | 2015-12-18 | 2016-05-04 | 珠海凌达压缩机有限公司 | Motor rotor and motor comprising same |
-
2015
- 2015-12-18 CN CN201510967657.XA patent/CN105429330A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140346911A1 (en) * | 2011-12-26 | 2014-11-27 | Mitsubishi Electric Corporation | Rotor |
| JP2014072924A (en) * | 2012-09-27 | 2014-04-21 | Aisin Seiki Co Ltd | Permanent magnet embedded motor |
| CN205212585U (en) * | 2015-12-18 | 2016-05-04 | 珠海凌达压缩机有限公司 | Motor rotor and motor comprising same |
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